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Commit f89f4147 authored by Hoan Tran's avatar Hoan Tran Committed by Rafael J. Wysocki
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cpufreq: CPPC: Avoid overflow when calculating desired_perf 



This patch fixes overflow issue when calculating the desired_perf.

Fixes: ad38677d (cpufreq: CPPC: Force reporting values in KHz to fix user space interface)
Signed-off-by: default avatarHoan Tran <hotran@apm.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent e01072d2

drivers/cpufreq/cppc_cpufreq.c

+1 −1
Original line number Diff line number Diff line
@@ -84,7 +84,7 @@ static int cppc_cpufreq_set_target(struct cpufreq_policy *policy, 


	cpu = all_cpu_data[policy->cpu];



	cpu->perf_ctrls.desired_perf = target_freq * policy->max / cppc_dmi_max_khz;

	cpu->perf_ctrls.desired_perf = (u64)target_freq * policy->max / cppc_dmi_max_khz;

	freqs.old = policy->cur;

	freqs.new = target_freq;